Английская Википедия:Glossary of string theory

Содержание

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Шаблон:Short description This page is a glossary of terms in string theory, including related areas such as supergravity, supersymmetry, and high energy physics.

αβγ

Шаблон:Term Шаблон:Defn Шаблон:Defn How are these related? There is only one dimensional constant in string theory, and that is the inverse string tension <math>\alpha^{\prime}</math> with units of area. Sometimes <math>\alpha^{\prime}</math> is therefore replaced by a length <math>l_s=\sqrt{\alpha^{\prime}}</math>. The string tension is mostly defined as the fraction

<math>\frac{1}{2\pi\alpha^{\prime}}.</math>

Tension is energy or work per unit length. In natural units <math>c=1</math> and <math>\hbar=1</math>, and hence <math>\alpha^{\prime}</math> has dimension of length/energy or length/mass. Since <math>\hbar</math> has the dimension of action, i.e. momentum times length, it follows that in natural units mass =1/length, and so <math>\alpha^{\prime}</math> has the unit of area. The slope <math>\alpha^{\prime}</math> of a Regge trajectory <math>\alpha(M^2)</math> in Regge theory is the derivative of spin <math>S</math> or angular momentum with respect to mass-squared, i.e.

<math>\frac{dS}{dM^2}.</math>

Since angular momentum is moment of momentum <math>p</math>, i.e. length times mass with <math>c=1</math>, <math>S</math> is dimensionless in natural units, and <math>\alpha^{\prime}</math> has units of <math>1/M^2</math> or area like the inverse string tension.

See also

• List of string theory topics

References

• Becker, Katrin, Becker, Melanie, and John H. Schwarz (2007) String Theory and M-Theory: A Modern Introduction . Cambridge University Press. Шаблон:ISBN
• Binétruy, Pierre (2007) Supersymmetry: Theory, Experiment, and Cosmology. Oxford University Press. Шаблон:ISBN.
• Dine, Michael (2007) Supersymmetry and String Theory: Beyond the Standard Model. Cambridge University Press. Шаблон:ISBN.
• Шаблон:Cite book
• Michael Green, John H. Schwarz and Edward Witten (1987) Superstring theory. Cambridge University Press. The original textbook.
  • Vol. 1: Introduction. Шаблон:ISBN.
  • Vol. 2: Loop amplitudes, anomalies and phenomenology. Шаблон:ISBN.
• Kiritsis, Elias (2007) String Theory in a Nutshell. Princeton University Press. Шаблон:ISBN.
• Шаблон:Cite book
• Polchinski, Joseph (1998) String Theory. Cambridge University Press.
  • Vol. 1: An introduction to the bosonic string. Шаблон:ISBN.
  • Vol. 2: Superstring theory and beyond. Шаблон:ISBN.
• Szabo, Richard J. (Reprinted 2007) An Introduction to String Theory and D-brane Dynamics. Imperial College Press. Шаблон:ISBN.
• Zwiebach, Barton (2004) A First Course in String Theory. Cambridge University Press. Шаблон:ISBN. Contact author for errata.

External links

• Particle physics glossary at interactions.org Шаблон:Webarchive